Be the Change
It can be interpreted in two ways: one is that it appeals to people
"to be the change" and for everyone to to their bit and reduce their
CO2 output so it's bringing everyone's attention to the 350 number of
the safe upper limit of CO2. People can interpret it as the greenery
is the current state and if we don't change our policies towards
climate change and all do our bit the world will look like the image
on the right:dry and barren. Or it can be seen as the dry barren land
is now and if we all do our bit for the climate we can get it back to
looking like the green image.
The 350 is in red to bring attention and focus to the number which I
think a lot of people are perhaps not aware of and it's imploring
people to be the change, do your part and be aware that every little
CO2 output into the atmosphere counts - every molecule counts.